If I'd have been a hair slower the first time I saw Ruby last summer, she'd have flattened me trying to get out of the barn. As it was, I just barely got out of her way. For the first couple of months we had her, I didn't want much to do with her because of that. With time, patience and my feeding her every day for months though we've become buddies.
I fully trust Ruby now and know what she'll put up with and have learned how to get her to accept something that she's not wanting anything to do with. Right now we're working on spray bottles and water hoses. She don't like either, but she's starting to come around to them as she knows I won't hurt her. Like I said above, time and patience.
We're lucky in that all our horses like people. Ruby can be a bit standoffish with people she don't know. But once she sees that they aren't going to hurt her, she'll come right up. She'd spent a few years before we got her with minimal human contact being used as a brood mare. With me and Mrs Willy, she's good as gold now. Buddy is a big "moose". He's not he sharpest knife in the drawer, but at the same time he's a big baby, always looking for attention and to please. Chief's just 7 weeks old now, but he's learning. He'll halter lead some now and the next lesson is how to get through the "evil" gate when he's being led. His trust isn't there yet, but he's still young too.
Horses know who likes 'em.